Not yet scoredPublished Dec 6, 2025

CVE-2025-40278net: sched: act_ife: initialize struct tc_ife to fix KMSAN kernel-infoleak

Updated under an hour ago (Oct 28, 2026, 12:20 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: net: sched: act_ife: initialize struct tc_ife to fix KMSAN kernel-infoleak Fix a KMSAN kernel-infoleak detected by the syzbot . [net?] KMSAN: kernel-infoleak in __skb_datagram_iter In tcf_ife_dump(), the variable 'opt' was partially initialized using a designatied initializer. While the padding bytes are reamined uninitialized. nla_put() copies the entire structure into a netlink message, these uninitialized bytes leaked to userspace. Initialize the structure with memset before assigning its fields to ensure all members and padding are cleared prior to beign copied. This change silences the KMSAN report and prevents potential information leaks from the kernel memory. This fix has been tested and validated by syzbot. This patch closes the bug reported at the following syzkaller link and ensures no infoleak.

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: Jun 2, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from ef6980b6becb1afd9d82a4f043749a10ae81bf14 before 918e063304f945fb93be9bb70cacea07d0b730ea; from ef6980b6becb1afd9d82a4f043749a10ae81bf14 before 5e3644ef147bf7140259dfa4cace680c9b26fe8b; from ef6980b6becb1afd9d82a4f043749a10ae81bf14 before 37f0680887c5aeba9a433fe04b35169010568bb1; from ef6980b6becb1afd9d82a4f043749a10ae81bf14 before 2191662058443e0bcc28d11694293d8339af6dde; from ef6980b6becb1afd9d82a4f043749a10ae81bf14 before a676a296af65d33725bdf7396803180957dbd92e; from ef6980b6becb1afd9d82a4f043749a10ae81bf14 before d1dbbbe839647486c9b893e5011fe84a052962df; from ef6980b6becb1afd9d82a4f043749a10ae81bf14 before c8f51dad94cbb88054e2aacc272b3ce1ed11fb1e; from ef6980b6becb1afd9d82a4f043749a10ae81bf14 before ce50039be49eea9b4cd8873ca6eccded1b4a130a	CNA record
Siemens RUGGEDCOM RST2428P siemens:ruggedcom_rst2428p (from the name)	before V4.0	CISA ADP

References

References

https://git.kernel.org/stable/c/918e063304f945fb93be9bb70cacea07d0b730ea
https://git.kernel.org/stable/c/5e3644ef147bf7140259dfa4cace680c9b26fe8b
https://git.kernel.org/stable/c/37f0680887c5aeba9a433fe04b35169010568bb1
https://git.kernel.org/stable/c/2191662058443e0bcc28d11694293d8339af6dde
https://git.kernel.org/stable/c/a676a296af65d33725bdf7396803180957dbd92e
https://git.kernel.org/stable/c/d1dbbbe839647486c9b893e5011fe84a052962df
https://git.kernel.org/stable/c/c8f51dad94cbb88054e2aacc272b3ce1ed11fb1e
https://git.kernel.org/stable/c/ce50039be49eea9b4cd8873ca6eccded1b4a130a
https://cert-portal.siemens.com/productcert/html/ssa-253495.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.